Nuclear power plant fire door positioning and fixing device and fire door mechanism

Abstract

This application relates to a fire door positioning and fixing device and a fire door mechanism for nuclear power plants. The fire door positioning and fixing device includes a door body fixing device and an adjusting fixing device. The door body fixing device includes a clamp and a locking member. The clamp has a clamping cavity for accommodating the fire door. The locking member is movably inserted through the clamp, with one end extending into the clamping cavity. The locking member is movable to abut against the fire door, clamping the fire door between the clamp and the locking member. The adjusting fixing device includes an adjusting member, a limiting member, and a hanging member. The hanging member is used to hang on a fixing post. The limiting member is located on the hanging member. One end of the adjusting member is connected to the locking member, and the other end is movably inserted through the limiting member. The limiting member locks or releases the adjusting member to adjust its length between the hanging member and the locking member. The fire door positioning and fixing device of this application ensures that the fire door is stably kept open, preventing accidental closure of the fire door.

Description

Technical Field

[0001] This application relates to the field of nuclear power plant safety equipment, and in particular to a nuclear power plant fire door positioning device and fire door mechanism. Background Technology

[0002] Fire doors in nuclear power plants, as a crucial component of safety facilities, bear the heavy responsibility of preventing the spread of fire and reducing the risk of nuclear radiation leakage. Operating personnel need to temporarily open fire doors during the isolation of ventilation systems such as DVE (Device Ventilation System) and DVL (Device Ventilation System). In related technologies, fire doors are typically blocked by a weighted object or by an embedded blocking block. However, these methods suffer from problems such as slippage upon contact with the ground and insecure fixing, making them prone to accidental closure. Utility Model Content

[0003] This application provides a fire door positioning device and fire door mechanism for nuclear power plants to solve the problem of unstable position of fire doors when they are opened, which can easily lead to accidental closure.

[0004] In a first aspect, this application provides a device for fixing the position of a fire door in a nuclear power plant, comprising:

[0005] A door fastener includes a clamp and a locking member. The clamp has a clamping cavity for accommodating a fire door. The locking member is movably inserted through the clamp, with one end of the locking member extending into the clamping cavity. The locking member is movable to abut against the fire door, so that the fire door is clamped between the clamp and the locking member.

[0006] An adjusting fastener includes an adjusting member, a limiting member, and a hanging member. The hanging member is used to attach to a fixed post. The limiting member is disposed on the hanging member. One end of the adjusting member is connected to the locking member, and the other end is movably inserted through the limiting member. The limiting member locks or releases the adjusting member to adjust the length of the adjusting member between the hanging member and the locking member.

[0007] Furthermore, the limiting member includes:

[0008] A limiting shell is connected to the hanging member; the limiting shell has a first chamber and a second chamber; the first chamber communicates with the second chamber, and the aperture of the second chamber is smaller than the aperture of the first chamber; the limiting shell is also provided with a clearance hole communicating with the second chamber; the limiting shell is also provided with a cable outlet hole communicating with the first chamber;

[0009] A limit lock has a locked state and an unlocked state; the limit lock includes a limiting part, an operating part, and a locking ball; the operating part is movably disposed through the clearance hole; the limiting part is movably disposed in the second chamber and connected to the operating part; the limiting part is conical; the second chamber is conical; a threading cavity passes through the limiting part and the operating part; an adjusting member is movably disposed in the threading cavity and extends out of the limiting shell from the wire outlet hole; the peripheral wall of the limiting part is provided with a mounting hole, the mounting hole communicating with the threading cavity; the locking ball is movably disposed in the mounting hole;

[0010] An elastic element is disposed within the first cavity and sleeved on the adjusting element; both ends of the elastic element abut against the cavity wall of the first cavity and the end of the limiting portion opposite to the operating portion, respectively;

[0011] In the locked state, the limiting part is pressed against the cavity wall of the second chamber under the force of the elastic member; and the locking ball abuts against the cavity wall of the second chamber and presses against the adjusting member.

[0012] In the released state, the operating part drives the limiting part to move away from the clearance hole, and the locking ball releases the adjusting member.

[0013] Furthermore, the peripheral wall of the limiting part is provided with a plurality of mounting holes; a locking bead is movably disposed in each of the mounting holes.

[0014] Furthermore, the outer diameter of the elastic element gradually increases from the end near the limiting portion to the end away from the limiting portion.

[0015] Furthermore, the outlet hole is located on the peripheral sidewall of the limiting shell; the axial direction of the outlet hole is designed at an acute angle to the axial direction of the limiting shell.

[0016] Furthermore, the limiting shell includes:

[0017] A first housing is connected to the hanging member; the first housing is provided with the first chamber and the cable outlet;

[0018] The second housing is inserted into the first cavity and threadedly connected to the end of the first housing away from the hanging member; the second housing is provided with the second cavity and the clearance hole.

[0019] Furthermore, the adjusting element is made of steel wire rope.

[0020] Furthermore, the clamp includes:

[0021] An assembly part is provided with a threaded hole; the locking member passes through the threaded hole and is threadedly connected to the assembly part.

[0022] The clamping part is arranged parallel to the assembly part; and the length of the clamping part is greater than the length of the assembly part.

[0023] A connecting part, the two ends of which are respectively connected to the clamping part and the assembly part to enclose and form the clamping cavity.

[0024] Furthermore, the locking element includes:

[0025] The screw portion is provided with external threads; the screw portion passes through the threaded hole to be threadedly connected to the assembly portion;

[0026] The abutting part is connected to one end of the screw part located in the clamping cavity and is used to abut against the fire door; the abutting part has an inner groove on the side opposite to the screw part, and a gasket is provided on the side of the abutting part opposite to the screw part, and the gasket and the groove wall of the inner groove form a concave cavity;

[0027] The lifting ring is connected to the end of the screw away from the abutment; the lifting ring is ring-shaped, and the adjusting member is movably connected to the lifting ring.

[0028] Secondly, this application provides a fire door mechanism, comprising:

[0029] Fire doors;

[0030] Fixed posts are installed at intervals from the fire door;

[0031] As described above, in the nuclear power plant fire door positioning and fixing device, the fire door is clamped in the clamping cavity by the locking member of the nuclear power plant fire door positioning and fixing device; the hanging member of the nuclear power plant fire door positioning and fixing device is attached to the fixing post.

[0032] The technical solution provided in this application has the following advantages compared with the prior art:

[0033] In this application's technical solution, the fire door requiring fixation is inserted into the clamping cavity, and the locking member is moved to clamp the fire door between the clamp and the locking member, thus achieving the purpose of fixing and locking the fire door with a door fixator. Simultaneously, the hanging member is attached to the fixing post, and the adjusting member is released by the limiting member to adjust its length between the hanging member and the locking member. Then, the adjusting member is locked by the limiting member. Therefore, the nuclear power plant fire door position fixing device of this application ensures that the fire door is stably in the open state, preventing accidental closure. Furthermore, the opening angle of the fire door can be adjusted by adjusting the adjusting member. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0037] Figure 1 This application provides a schematic diagram of the structure of a nuclear power plant fire door positioning device according to an embodiment of the present application.

[0038] Figure 2 for Figure 1 Schematic diagram of the middle limiting component;

[0039] Figure 3 This is a structural schematic diagram of a fire door mechanism provided in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] Door fixing device 1, clamp 11, assembly part 111, clamping part 112, connecting part 113, clamping cavity 11a, locking part 12, screw part 121, abutment part 122, washer 123, lifting ring part 124.

[0042] Adjustable fixing device 2, adjusting component 21, limiting component 22, limiting shell 221, first chamber 221a, second chamber 221b, clearance hole 221c, cable outlet hole 221d, first housing 2211, second housing 2212, limiting lock 222, limiting part 2221, operating part 2222, locking ball 2223, elastic component 223, hanging component 23, lock body 241, locking bolt 242.

[0043] Fire door 100, fixing post 200. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0046] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0047] Firstly, Figures 1 to 3A fire door positioning device for a nuclear power plant, provided in this application embodiment, includes a door fixing device 1 and an adjusting fixing device 2. The door fixing device 1 includes a clamp 11 and a locking member 12. The clamp 11 has a clamping cavity 11a for accommodating a fire door 100. The locking member 12 is movably inserted through the clamp 11, with one end of the locking member 12 extending into the clamping cavity 11a. The locking member 12 is movable to abut against the fire door 100 to clamp the fire door 100. The adjusting fastener 2 is located between the clamp 11 and the locking member 12. The adjusting fastener 2 includes an adjusting member 21, a limiting member 22, and a hanging member 23. The hanging member 23 is used to hang on the fixed pile 200. The limiting member 22 is located on the hanging member 23. One end of the adjusting member 21 is connected to the locking member 12, and the other end is movably inserted through the limiting member 22. The limiting member 22 locks or releases the adjusting member 21 to adjust the length of the adjusting member 21 between the hanging member 23 and the locking member 12.

[0048] Understandably, the fire door 100, which needs to be fixed, is inserted into the clamping cavity 11a, and the locking member 12 is moved to clamp the fire door 100 between the clamp 11 and the locking member 12, thus achieving the purpose of fixing and locking the fire door 100 by the door fixer 1. At the same time, the hanging member 23 is attached to the fixing post 200, and the adjusting member 21 is released by the limiting member 22 to adjust the length of the adjusting member 21 between the hanging member 23 and the locking member 12. Then, the adjusting member 21 is locked by the limiting member 22. In this way, the fire door position fixing device of the nuclear power plant of this application can keep the fire door 100 stably in the open state, avoiding the problem of the fire door 100 being accidentally closed, and the opening angle of the fire door 100 can be adjusted by adjusting the adjusting member 21.

[0049] The fire door position fixing device of this nuclear power plant is used in situations where it is necessary to temporarily open the fire door 100. After the fire door 100 is temporarily opened during the isolation of the nuclear power plant ventilation system, the fire door position fixing device needs to be separated from the fire door 100 by loosening the locking member 12, and the fire door 100 is restored to the normally closed state.

[0050] like Figure 2As shown, in the technical solution of this embodiment, the limiting member 22 includes a limiting shell 221, a limiting lock 222, and an elastic member 223. The limiting shell 221 is connected to the hanging member 23. The limiting shell 221 has a first chamber 221a and a second chamber 221b. The first chamber 221a communicates with the second chamber 221b, and the aperture of the second chamber 221b is smaller than the aperture of the first chamber 221a. The limiting shell 221 also has a clearance hole 221c communicating with the second chamber 221b. The limiting shell 221 also has a wire outlet hole 221d communicating with the first chamber 221a. The limiting lock 222 has a locked state and an unlocked state. The limiting lock 222 includes a limiting part 2221, an operating part 2222, and a locking ball 2223. The operating part 2221... The limiting part 2221 is movably disposed in the clearance hole 221c; the limiting part 2221 is movably disposed in the second chamber 221b and connected to the operating part 2222; the limiting part 2221 is conical; the second chamber 221b is conical; the threading cavity passes through the limiting part 2221 and the operating part 2222; the adjusting member 21 is movably disposed in the threading cavity and extends out of the limiting shell 221 from the outlet hole 221d; the peripheral wall of the limiting part 2221 is provided with a mounting hole, which communicates with the threading cavity; the locking bead 2223 is movably disposed in the mounting hole; the elastic member 223 is disposed in the first chamber 221a and sleeved on the adjusting member 21; the two ends of the elastic member 223 respectively abut against the cavity wall of the first chamber 221a and the end of the limiting part 2221 away from the operating part 2222.

[0051] In the locked state, the limiting part 2221 is pressed against the cavity wall of the second chamber 221b under the force of the elastic member 223; and the locking ball 2223 abuts against the cavity wall of the second chamber 221b and presses against the adjusting member 21.

[0052] When in the released state, the operating part 2222 drives the limiting part 2221 to move away from the clearance hole 221c, and the locking ball 2223 releases the adjusting member 21.

[0053] It is understood that one end of the operating part 2222 is located inside the second chamber 221b, and the other end protrudes from the clearance hole 221c to the outside of the limiting shell 221. This allows for convenient direct pressing of the operating part 2222. By pressing the operating part 2222 towards the inside of the limiting shell 221, the operating part drives the limiting part 2221 to move away from the clearance hole 221c, pressing the elastic element 223 during the movement. When the limiting part 2221 drives the locking ball 2223 to move away from the clearance hole 221c, the pressure of the second chamber 221b on the locking ball 2223 disappears, and the locking ball 2223 locks and unlocks the adjusting element 21. The adjusting element 21 can then move within the threading cavity to adjust its length between the hanging element 23 and the locking element 12.

[0054] After the adjustment of the adjusting member 21 is completed, the operating part 2222 is released. The limiting part 2221 and the operating part 2222 move in opposite directions under the force of the elastic member 223. The limiting part 2221 moves to abut against the cavity wall of the second chamber 221b. Thus, the axial direction of the limiting part 2221 is limited by the combined action of the elastic member 223 and the cavity wall of the second chamber 221b. At this time, the locking ball 2223 also moves with the limiting part 2221. The peripheral cavity wall of the second chamber 221b presses the locking ball 2223, so that the locking ball 2223 presses the adjusting member 21, thereby locking the position of the adjusting member 21. As a result, when the fire door 100 is fixed by the fire door position fixing device in the nuclear power plant, the fire door 100 will not close unexpectedly.

[0055] like Figure 2 As shown, in the technical solution of this embodiment, the peripheral wall of the limiting part 2221 is provided with a plurality of mounting holes; a locking ball 2223 is movably disposed in each mounting hole.

[0056] It is understandable that by setting multiple mounting holes to install multiple locking beads 2223, the locking strength of the adjusting member 21 is improved, thereby improving the locking stability of the adjusting member 21 and reducing the occurrence of the fire door 100 rotating in the closing direction.

[0057] Preferably, the plurality of mounting holes are evenly distributed along the peripheral wall of the limiting portion 2221. For example, the number of mounting holes is three.

[0058] like Figure 2 As shown, in the technical solution of this embodiment, the outer diameter of the elastic member 223 gradually increases from the end near the limiting portion 2221 to the end away from the limiting portion 2221.

[0059] It is understood that the first end of the elastic member 223 abuts against the limiting part 2221, and the second end of the elastic member 223 abuts against the cavity wall of the first chamber 221a. The outer diameter of the elastic member 223 gradually increases from the first end to the second end. In this way, the elastic member 223 adapts to the difference in aperture between the second chamber 221b and the first chamber 221a, improves the positional stability of the elastic member 223, and prevents the elastic member 223 from bending.

[0060] like Figure 2As shown, in the technical solution of this embodiment, the outlet hole 221d is located on the peripheral sidewall of the limiting shell 221; the axial direction of the outlet hole 221d is designed at an acute angle to the axial direction of the limiting shell 221. This reasonable design of the outlet hole 221d position facilitates direct pulling of the adjusting member 21 when adjusting it; and the acute angle between the axial direction of the outlet hole 221d and the axial direction of the limiting shell 221 ensures that the direction in which the adjusting member 21 extends is at an acute angle to the axial direction of the first chamber 221a, which increases the friction between the adjusting member 21 and the limiting shell 221, reducing the risk of the adjusting member 21 becoming loose when the limiting member 22 is in the locked state.

[0061] like Figure 2 As shown, in the technical solution of this embodiment, the limiting shell 221 includes a first shell 2211 and a second shell 2212. The first shell 2211 is connected to the hanging member 23. The first shell 2211 is provided with a first chamber 221a and a wire outlet hole 221d. The second shell 2212 is inserted into the first chamber 221a and is threadedly connected to the end of the first shell 2211 away from the hanging member 23. The second shell 2212 is provided with a second chamber 221b and a clearance hole 221c.

[0062] It is understandable that the threaded connection between the first housing 2211 and the second housing 2212 enables the quick assembly and disassembly of the adjusting fixture 2.

[0063] In this embodiment, the adjusting member 21 is made of steel wire rope. It is understood that using steel wire rope can improve connection strength and reduce the risk of breakage of the adjusting member 21.

[0064] like Figure 1 As shown, in this embodiment, the clamp 11 includes an assembly part 111, a clamping part 112, and a connecting part 113. The assembly part 111 has a threaded hole; the locking member 12 passes through the threaded hole and is threadedly connected to the assembly part 111; the clamping part 112 is arranged parallel to the assembly part 111; and the length of the clamping part 112 is greater than the length of the assembly part 111; the two ends of the connecting part 113 are respectively connected to the clamping part 112 and the assembly part 111 to form a clamping cavity 11a. The clamp 11 designed in this way has a simple structure, is easy to process, and is easy to operate when clamped into the fire door 100. The length of the clamping part 112 is greater than that of the assembly part 111, which increases the contact area when the clamping part 112 abuts against the fire door 100, thereby improving the fixing stability between the door fixator 1 and the fire door 100. The length of the assembly part 111 is shorter than that of the clamping part 112, which also reduces costs.

[0065] Preferably, the position of the threaded hole is set approximately at the center of the clamping part 112, which can improve the clamping stability of the fire door 100.

[0066] like Figure 1 As shown, in the technical solution of this embodiment, the locking member 12 includes a screw portion 121, an abutment portion 122, and a lifting ring portion 124. The screw portion 121 is provided with an external thread; the screw portion 121 passes through the threaded hole to be threadedly connected to the assembly portion 111; the abutment portion 122 is connected to one end of the screw portion 121 located in the clamping cavity 11a, and is used to abut against the fire door 100; the abutment portion 122 has an inner groove on the side away from the screw portion 121, and a washer 123 is provided on the side of the abutment portion 122 away from the screw portion 121, and the washer 123 and the groove wall of the inner groove form a concave cavity; the lifting ring portion 124 is connected to the end of the screw away from the abutment portion 122; the lifting ring portion 124 is annular, and the adjusting member 21 is movably connected to the lifting ring portion 124.

[0067] It is understood that by rotating the screw portion 121 threaded to the threaded hole, the abutment portion 122 can be moved closer to or further away from the clamping portion 112, thereby clamping or releasing the fire door 100. The lifting ring portion 124 provides a convenient gripping position for rotating the screw portion 121 and also provides an installation position for the adjusting member 21. The adjusting member 21 is movably connected to the lifting ring portion 124 to accommodate different opening angles of the fire door 100. In this embodiment, the abutment portion 122 is used to abut against the fire door 100. A gasket 123 is provided on the side of the abutment portion 122 facing the clamping portion 112 to increase cushioning protection and friction. Meanwhile, the abutment portion 122 has an inner groove on the side facing the clamping portion 112, and a through hole on the side facing the screw portion 121. The screw portion 121 passes through the through hole, and the screw portion 121 and the abutment portion 122 are connected and fixed by a screw. The screw head is engaged with the side of the inner groove. Furthermore, since the gasket 123 is elastic, when the abutment portion 122 presses against the fire door 100, the cavity formed by the inner groove and the gasket 123 will form a certain adsorption force, improving the connection stability between the abutment portion 122 and the fire door 100.

[0068] like Figure 1 As shown, in this embodiment, after passing through the lifting ring portion 124, the adjusting member 21 is locked to itself by a locking mechanism, forming a retaining ring at the end of the adjusting member 21 away from the hook member, thus achieving a movable connection between the adjusting member 21 and the lifting ring. The locking mechanism includes a lock body 241 and a locking bolt 242. The lock body 241 has two spaced-apart through holes. The adjusting member 21 passes through one through hole, and after passing through the lifting ring portion 124, it passes through the other through hole. Both ends of the lock body 241 have mating holes with internal threads. The mating holes communicate with the through holes, and the locking bolt 242 passes through the through holes. Rotating the locking bolt 242 causes it to abut against the adjusting member 21, locking the adjusting member 21 to the lock body 241.

[0069] Secondly, such as Figure 3 As shown, this application also provides a fire door mechanism, including a fire door 100, a fixing post 200, and the above-mentioned nuclear power plant fire door positioning device. The specific structure of the nuclear power plant fire door positioning device is the same as described in the above embodiments. Since this fire door mechanism adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The fixing post 200 is spaced apart from the fire door 100; the fire door 100 is clamped in the clamping cavity 11a by the locking member 12 of the nuclear power plant fire door positioning device; the hanging member 23 of the nuclear power plant fire door positioning device is attached to the fixing post 200.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0073] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0074] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0077] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for fixing the position of a fire door in a nuclear power plant, characterized in that, include: A door fastener (1) includes a clamp (11) and a locking member (12). The clamp (11) has a clamping cavity (11a) for accommodating a fire door (100). The locking member (12) is movably inserted through the clamp (11), and one end of the locking member (12) extends into the clamping cavity (11a). The locking member (12) is movable to abut against the fire door (100) so that the fire door (100) is clamped between the clamp (11) and the locking member (12). The adjusting fastener (2) includes an adjusting member (21), a limiting member (22), and a hanging member (23). The hanging member (23) is used to hang on the fixing post (200). The limiting member (22) is provided on the hanging member (23). One end of the adjusting member (21) is connected to the locking member (12), and the other end is movably inserted through the limiting member (22). The limiting member (22) locks or releases the adjusting member (21) to adjust the length of the adjusting member (21) between the hanging member (23) and the locking member (12).

2. The nuclear power plant fire door positioning device according to claim 1, characterized in that, The limiting member (22) includes: A limiting shell (221) is connected to the hanging member (23); the limiting shell (221) has a first chamber (221a) and a second chamber (221b); the first chamber (221a) communicates with the second chamber (221b), and the aperture of the second chamber (221b) is smaller than the aperture of the first chamber (221a); ​​the limiting shell (221) is also provided with a clearance hole (221c) communicating with the second chamber (221b); the limiting shell (221) is also provided with a cable outlet hole (221d) communicating with the first chamber (221a); A limit lock (222) has a locked state and an unlocked state; the limit lock (222) includes a limit part (2221), an operating part (2222), and a lock ball (2223); the operating part (2222) is movably disposed in the clearance hole (221c); the limit part (2221) is movably disposed in the second chamber (221b) and connected to the operating part (2222); the limit part (2221) is conical. The second chamber (221b) is conical; the threading cavity passes through the limiting part (2221) and the operating part (2222); the adjusting member (21) is movably inserted through the threading cavity and extends out of the limiting shell (221d) from the outlet hole (221d); the peripheral wall of the limiting part (2221) is provided with a mounting hole, which communicates with the threading cavity; the locking bead (2223) is movably disposed in the mounting hole; An elastic element (223) is disposed in the first chamber (221a) and sleeved on the adjusting element (21); the two ends of the elastic element (223) respectively abut against the cavity wall of the first chamber (221a) and the end of the limiting part (2221) away from the operating part (2222); In the locked state, the limiting part (2221) is pressed against the cavity wall of the second chamber (221b) under the force of the elastic member (223); and the locking ball (2223) abuts against the cavity wall of the second chamber (221b) and presses against the adjusting member (21); In the released state, the operating part (2222) drives the limiting part (2221) to move away from the clearance hole (221c), and the locking ball (2223) releases the adjusting member (21).

3. The nuclear power plant fire door positioning device according to claim 2, characterized in that, The peripheral wall of the limiting part (2221) is provided with a plurality of mounting holes; a locking ball (2223) is movably disposed in each mounting hole.

4. The nuclear power plant fire door positioning device according to claim 2, characterized in that, The outer diameter of the elastic element (223) gradually increases from the end near the limiting portion (2221) to the end away from the limiting portion (2221).

5. The nuclear power plant fire door positioning device according to claim 2, characterized in that, The outlet hole (221d) is located on the peripheral sidewall of the limiting shell (221); the axial direction of the outlet hole (221d) is designed at an acute angle to the axial direction of the limiting shell (221).

6. The nuclear power plant fire door positioning device according to claim 2, characterized in that, The limiting shell (221) includes: A first housing (2211) is connected to the hanging member (23); the first housing (2211) is provided with the first chamber (221a) and the cable outlet (221d); The second housing (2212) is inserted into the first chamber (221a) and threadedly connected to the end of the first housing (2211) away from the hanging member (23); the second housing (2212) is provided with the second chamber (221b) and the clearance hole (221c).

7. The nuclear power plant fire door positioning device according to claim 1, characterized in that, The adjusting component (21) is made of steel wire rope.

8. The nuclear power plant fire door positioning device according to any one of claims 1 to 7, characterized in that, The clamp (11) includes: The assembly part (111) is provided with a threaded hole; the locking member (12) passes through the threaded hole and is threadedly connected to the assembly part (111); The clamping part (112) is arranged parallel to the assembly part (111); and the length of the clamping part (112) is greater than the length of the assembly part (111). A connecting part (113) is provided, with its two ends connected to the clamping part (112) and the assembly part (111) respectively, to enclose and form the clamping cavity (11a).

9. The nuclear power plant fire door positioning device according to claim 8, characterized in that, The locking element (12) includes: The screw part (121) is provided with external threads; the screw part (121) passes through the threaded hole to be threadedly connected to the assembly part (111); An abutment portion (122) is connected to one end of the screw portion (121) located in the clamping cavity (11a) and is used to abut against the fire door (100); the abutment portion (122) has an inner groove on the side away from the screw portion (121) and a gasket (123) on the side away from the screw portion (121), the gasket (123) and the groove wall of the inner groove form a concave cavity; The lifting ring (124) is connected to the end of the screw away from the abutment (122); the lifting ring (124) is ring-shaped, and the adjusting member (21) is movably connected to the lifting ring (124).

10. A fire door mechanism, characterized in that, include: Fire door (100); Fixed posts (200) are spaced apart from the fire door (100); According to any one of claims 1 to 9, the fire door (100) is clamped in the clamping cavity (11a) by the locking member (12) of the fire door position fixing device; the hanging member (23) of the fire door position fixing device is attached to the fixing post (200).

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